I need a full-stack mobile developer to build an app that runs smoothly on both iOS and Android. The core flow is simple: a user logs in, records their voice, receives a near-error-free transcript, and then sees AI-generated feedback on that recording. Key functionality • Secure email / social login with token refresh • High-quality voice recording (no video or screen capture) stored locally first, then uploaded in the background • Server-side transcription that targets minimal errors—think the accuracy of best-in-class speech-to-text engines, not a basic word dump • An AI analysis module that scores clarity, pace, filler-word usage and returns actionable tips in real time • A clean history screen where users can replay audio, read transcripts, and compare feedback across sessions • Basic settings: dark/light theme toggle, delete account, export transcript Tech notes I’m open to Flutter, React Native or native stacks—whichever lets us ship quickly without compromising recording quality. For the back end you can suggest Firebase, Supabase, or another scalable option as long as auth and file storage are handled securely. Please mention any speech-to-text and NLP libraries you plan to integrate (e.g., Google Speech, Whisper, OpenAI, etc.) so I can evaluate licensing and operational costs. Deliverables 1. Source code for mobile apps and backend 2. API documentation and minimal setup guide 3. Test build links (TestFlight / Play console) for final acceptance 4. Open API to go to CRMS If you have shipped production audio apps or have demonstrable experience with speech technologies, I would love to see your work.